JP2002212440A - Thermoplastic resin composition and its molding - Google Patents
Thermoplastic resin composition and its moldingInfo
- Publication number
- JP2002212440A JP2002212440A JP2001009118A JP2001009118A JP2002212440A JP 2002212440 A JP2002212440 A JP 2002212440A JP 2001009118 A JP2001009118 A JP 2001009118A JP 2001009118 A JP2001009118 A JP 2001009118A JP 2002212440 A JP2002212440 A JP 2002212440A
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- JP
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- Prior art keywords
- thermoplastic resin
- filler
- resin composition
- molding
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アルミフレークな
どを原料とするメタリック調顔料を配合した熱可塑性樹
脂組成物およびその成形物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermoplastic resin composition containing a metallic pigment made from aluminum flake or the like and a molded product thereof.
【０００２】[0002]
【従来の技術】従来より、アルミフレークなどを原料と
するメタリック調顔料を配合した熱可塑性樹脂組成物を
用いて射出成形または押出成形を行ない、メタリック調
の成形物を得ている。2. Description of the Related Art Conventionally, injection molding or extrusion molding has been carried out using a thermoplastic resin composition containing a metallic pigment made from aluminum flakes or the like as a raw material, to obtain a metallic molded article.
【０００３】[0003]
【発明が解決しようとする課題】アルミフレークなどを
原料とするメタリック調顔料のような板状フィラーを配
合した熱可塑性樹脂組成物を用いて射出成形または押出
成形を行なうと、溶融樹脂が会合した部分に明らかに接
合部分と分かる線（ウエルド）が現れる。また、その下
流には流れむらが現れる。これは、ウエルド部分で板状
フィラーが製品表面に対して直立配向し、板状フィラー
が製品表面に対して平行に配向した他の部分に対して色
濃く見えるためと一般に言われている。When injection molding or extrusion molding is carried out using a thermoplastic resin composition containing a plate-like filler such as a metallic pigment made from aluminum flakes or the like, molten resin is associated. A line (weld) clearly appears at the portion as a joint portion. In addition, unevenness of the flow appears downstream. This is generally said to be because the plate-like fillers are oriented upright with respect to the product surface at the welded portion, and the plate-like fillers appear darker at other portions which are oriented parallel to the product surface.
【０００４】ところが、詳細に観察してみると、ウエル
ド部にフィラーを含有しない（あるいは含有量が少な
い）透明部分があってウエルドを強調しており、流れむ
らは、フィラーを含有しない（あるいは含有量が少な
い）透明部分が川状になって、フィラー濃度が高い平面
に流れて見えていることが判明した。However, a close observation shows that there is a transparent portion containing no filler (or a small content) in the weld portion, which emphasizes the weld, and that the flow unevenness does not contain the filler (or contains no filler). It was found that the transparent portion (small amount) had a river shape and was seen to flow on a plane having a high filler concentration.
【０００５】メタリック調顔料のような板状フィラーを
配合した熱可塑性組成物は、商品価値を高める有用な表
面加飾手段であるが、上述のような欠点があるため、適
用できる成形物の形状が制限されてきた。[0005] A thermoplastic composition containing a plate-like filler such as a metallic pigment is a useful surface decorating means for increasing commercial value. Has been restricted.
【０００６】本発明は、射出成形や押出成形などにおい
て、成形物表面にウエルドあるいは流れむら等の不良現
象が発生しないメタリック調顔料を配合した熱可塑性樹
脂組成物およびその成形物を得ることを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a thermoplastic resin composition containing a metallic pigment which does not cause defects such as weld or uneven flow on the surface of a molded product in injection molding or extrusion molding, and a molded product thereof. And
【０００７】[0007]
【課題を解決するための手段】本発明は、上記課題を次
のようにして解決する。The present invention solves the above-mentioned problems as follows.
【０００８】すなわち、下記の熱可塑性樹脂組成物を用
いて射出成形または押出成形することによりウエルドや
流れむらのない成形品を得る。[0008] That is, a molded article free of welds and uneven flow is obtained by injection molding or extrusion molding using the following thermoplastic resin composition.
【０００９】（ａ）熱可塑性樹脂：９０〜９５重量％、
メタリック調顔料：０．１〜５重量％、メタリック調フ
ィラー：０．１〜５重量％を含む熱可塑性樹脂組成物 （ｂ）熱可塑性樹脂：５０〜９５重量％、メタリック調
顔料：０．１〜５重量％、メタリック調フィラー：０．
１〜５重量％、繊維状フィラーと針状フィラーの少なく
とも一方：０．１〜５０重量％を含む熱可塑性樹脂組成
物 前記射出成形において、ウェルドを目立たなくするため
に金型のキャビティ表面の温度を繰り返し上下するヒー
トサイクル成形法を用い、また透明樹脂を表層として組
合わせるために２色成形法を用いて成形物を得ることが
好ましい。(A) thermoplastic resin: 90 to 95% by weight,
Thermoplastic resin composition containing metallic pigment: 0.1 to 5% by weight, metallic filler: 0.1 to 5% by weight (b) Thermoplastic resin: 50 to 95% by weight, metallic pigment: 0.1 ~ 5% by weight, metallic filler: 0.
Thermoplastic resin composition containing 1 to 5% by weight, at least one of fibrous filler and needle-like filler: 0.1 to 50% by weight In the above-mentioned injection molding, the temperature of the cavity surface of the mold is set so as to make weld inconspicuous. It is preferable to obtain a molded product by using a heat cycle molding method of repeatedly raising and lowering, and by using a two-color molding method in order to combine a transparent resin as a surface layer.
【００１０】[0010]
【発明の実施の形態】本発明の実施の形態について実施
例に基づき図面を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings.
【００１１】メタリック調顔料のような板状フィラーを
配合した熱可塑性樹脂組成物を用いて射出成形または押
出成形を行う際に、例えば、図１に示すように溶融樹脂
の流路に孔１のような障害物があると、その下流にウエ
ルド２が現れる。図１のＡーＡ線断面図である図２に示
すように、孔１の近傍の断面では、板状フィラーがウエ
ルド部分で成形物表面に対して直立し、その中間に透明
層３が形成される。これらの部分の色調は、板状フィラ
ーが成形物表面に沿って配向している他の部分と異なる
ために、ウエルドとして認識される。When injection molding or extrusion molding is performed using a thermoplastic resin composition containing a plate-like filler such as a metallic pigment, for example, as shown in FIG. When such an obstacle is present, a weld 2 appears downstream of the obstacle. As shown in FIG. 2 which is a cross-sectional view taken along the line AA in FIG. 1, in the cross section near the hole 1, the plate-like filler stands upright on the surface of the molded product at the weld portion, and the transparent layer 3 is formed in the middle. Is done. The color tone of these parts is recognized as a weld because the plate-like filler is different from the other parts oriented along the surface of the molded product.
【００１２】透明層３が形成されるのは、図３に示すよ
うに、溶融樹脂のフローフロントにフォンテンフロー４
と呼ばれる流動層があり、溶融樹脂が会合後流動層がそ
のまま冷却固化され、この流動層に板状フィラーが含ま
れない（または少ない）ために、透明層となると考えら
れる。The transparent layer 3 is formed, as shown in FIG.
It is considered that there is a fluidized bed, and after the molten resin is associated, the fluidized bed is cooled and solidified as it is, and since this fluidized bed does not contain (or has little) plate-like filler, it is considered to be a transparent layer.
【００１３】また、図１のＢーＢ線断面図である図４に
示すように、ウエルド２の下流に流れむらとして観察さ
れる部分に逆三角形状の透明層３が観察される。これ
は、図２に示した透明層３が溶融樹脂の流動方向に押し
流される間に、成形物の表面に押し出されたものであろ
うと推察される。In addition, as shown in FIG. 4 which is a cross-sectional view taken along the line BB of FIG. This is presumably because the transparent layer 3 shown in FIG. 2 was extruded onto the surface of the molded product while being pushed in the flow direction of the molten resin.
【００１４】先に本発明者らは、特願２０００−０１５
５８８号によって、パール調顔料やメタリック調顔料の
ような板状フィラーに、ガラス繊維のような繊維状フィ
ラーや、チタン酸カリウムのような針状フィラーを加え
て樹脂に配合すると、上述したような欠点が軽減される
ことを提案したが、その後引き続き品質の改良を検討し
た結果、次のような発明を見いだした。[0014] The present inventors have previously described Japanese Patent Application No. 2000-015.
According to No. 588, when a fibrous filler such as glass fiber or an acicular filler such as potassium titanate is added to a plate-like filler such as a pearl pigment or a metallic pigment and blended into a resin, Although it was suggested that the disadvantages be reduced, the following inventions were found as a result of subsequent studies on improving quality.
【００１５】すなわち、本発明による熱可塑性樹脂組成
物は、熱可塑性樹脂：９０〜９５重量％、メタリック調
顔料：０．１〜５重量％、メタリック調フィラー：０．
１〜５重量％を含むものである。That is, the thermoplastic resin composition according to the present invention comprises: 90 to 95% by weight of a thermoplastic resin, 0.1 to 5% by weight of a metallic pigment, and 0.1 to 5% by weight of a metallic filler.
It contains 1 to 5% by weight.
【００１６】本発明による他の熱可塑性樹脂組成物は、
熱可塑性樹脂：５０〜９５重量％、メタリック調顔料：
０．１〜５重量％、メタリック調フィラー：０．１〜５
重量％、繊維状フィラーと針状フィラーの少なくとも一
方：０．１〜５０重量％を含むものである。Another thermoplastic resin composition according to the present invention comprises:
Thermoplastic resin: 50-95% by weight, metallic pigment:
0.1-5% by weight, metallic filler: 0.1-5
%, At least one of a fibrous filler and an acicular filler: 0.1 to 50% by weight.
【００１７】前記熱可塑性樹脂には、結晶性あるいは非
結晶性の汎用樹脂およびエンプラを含む。The thermoplastic resin includes a crystalline or non-crystalline general-purpose resin and an engineering plastic.
【００１８】前記メタリック調顔料には、アルミフレー
クなどを原料とするもののほか、ガラスフレークをメタ
リック調に表面処理したものなどを含む。The above-mentioned metallic pigment includes those obtained by subjecting glass flakes to a metallic surface treatment, in addition to those using aluminum flakes as a raw material.
【００１９】前記メタリック調フィラーは、アルミニウ
ム金属が５０重量％以上含まれる、純アルミニウム、ア
ルミニウム化合物、アルミニウム合金を含み、径は０．
００１〜３００μｍの不定形あるいは球形の金属粒であ
る。色調はメタリック調顔料に近いことが好ましい。The metallic filler includes pure aluminum, an aluminum compound, and an aluminum alloy containing 50% by weight or more of aluminum metal, and has a diameter of 0.1%.
These are amorphous or spherical metal particles of 001 to 300 μm. The color tone is preferably close to that of a metallic pigment.
【００２０】前記繊維状フィラーには、ガラス繊維など
の各種無機繊維、アラミド繊維などの各種有機繊維、炭
素繊維などを含む。また、前記針状フィラーには、チタ
ン酸カリウムなどのウイスカ、ウオラストナイト等の鉱
物系針状フィラーなどを含む。The fibrous filler includes various inorganic fibers such as glass fibers, various organic fibers such as aramid fibers, and carbon fibers. The acicular filler includes whiskers such as potassium titanate and mineral-based acicular fillers such as wollastonite.
【００２１】次に、上記熱可塑性樹脂組成物の成分の作
用について説明する。Next, the function of the components of the thermoplastic resin composition will be described.
【００２２】メタリック調顔料のような板状フィラー
は、成形物表面に直立して配向しウエルドを強調する
が、このメタリック調顔料にメタリック調フィラーを加
えて熱可塑性樹脂に配合すると、このウェルドを強調す
る現象が緩和される。これは、メタリック調フィラーが
板状フィラーの間に分布して配向を緩和するためでない
かと考えられる。A plate-like filler such as a metallic pigment is oriented upright on the surface of the molded product and emphasizes the weld. However, when the metallic pigment is added to the thermoplastic resin and blended with a thermoplastic resin, the weld is formed. The emphasis is reduced. This is considered to be because the metallic filler is distributed between the plate-like fillers to relax the orientation.
【００２３】また、メタリック調顔料にメタリック調フ
ィラーを加えて熱可塑性樹脂に配合すると、透明部分が
見えにくくなる。これは、透明層にメタリック調フィラ
ーが混入するためではないかと考えられる。When a metallic filler is added to a metallic pigment and blended with a thermoplastic resin, a transparent portion becomes difficult to see. It is considered that this is because the metallic filler is mixed in the transparent layer.
【００２４】このものに更にガスラ繊維などのような繊
維状フィラーや、チタン酸カリウムなどのような針状フ
ィラーを加えると、上記と同様にウェルドを強調する現
象が緩和され、透明層も更に見えにくくなる。これは、
繊維状フィラーや針状フィラーが、図３に示すようなフ
ォンテンフローを阻止するためと考えられる。When a fibrous filler such as gasla fiber or a needle-like filler such as potassium titanate is further added to this, the phenomenon of enhancing the weld is reduced as described above, and the transparent layer is further visible. It becomes difficult. this is,
It is considered that the fibrous filler and the needle-like filler prevent Fonten flow as shown in FIG.
【００２５】次に、上記熱可塑性樹脂組成物の成形に用
いられる成形法について説明する。Next, a molding method used for molding the thermoplastic resin composition will be described.
【００２６】射出成形法には、通常の射出成形法の他
に、射出圧縮法、局部加振・加圧法、ガスプレス法、ガ
スアシスト法、中空成形法、サンドイッチ成形法、２色
成形法、インモールド成形法、プッシュプル成形法、高
速射出成形法、ヒートサイクル成形法を含む。中でも、
２色成形法で透明樹脂を表層として組合わせると、色調
に深みが増す。As the injection molding method, in addition to the usual injection molding method, an injection compression method, a local vibration / pressing method, a gas press method, a gas assist method, a hollow molding method, a sandwich molding method, a two-color molding method, Including in-mold molding, push-pull molding, high-speed injection molding, and heat cycle molding. Among them,
When a transparent resin is combined as a surface layer by the two-color molding method, the color tone becomes deeper.
【００２７】また、前記ウエルドは、溶融樹脂の会合部
において、２つの峰がせりあった形をしているので、ヒ
ートサイクル成形法を用いると、この２つの峰が押しつ
ぶされて平滑になり、ウエルドが更に目立たなくなる。In addition, since the weld has a shape with two peaks at the meeting portion of the molten resin, when the heat cycle molding method is used, the two peaks are crushed and become smooth, Weld becomes less noticeable.
【００２８】なお、ヒートサイクル成形法とは、溶融樹
脂を金型に充填する際には、金型温度を高くしておき、
充填完了後に金型温度を下げて成形品を取り出す方法で
ある。ヒートサイクル成形法には、キャビティ表面近傍
に加熱と冷却の媒体を通す方法や、キャビティ表面を加
熱するために電気ヒータや高周波を用いる方法などが数
多く提案されている。In the heat cycle molding method, when filling a molten resin into a mold, the mold temperature is set high,
After filling is completed, the mold temperature is lowered and the molded product is taken out. As the heat cycle molding method, many methods such as a method of passing a heating and cooling medium near the cavity surface and a method of using an electric heater or a high frequency to heat the cavity surface have been proposed.
【００２９】前記押出成形法には、ブロー成形法、シー
ト成形法などを含む。The extrusion molding method includes a blow molding method and a sheet molding method.
【００３０】[0030]
【発明の効果】本発明により、メタリック調の射出成形
または押出成形において、ウエルドや流れむらのない成
形品が得ることができる。According to the present invention, it is possible to obtain a molded article having no weld or uneven flow in metallic injection molding or extrusion molding.
【図１】板状フィラーを配合した熱可塑性樹脂組成物を
用いて射出成形または押出成形を行う際に、溶融樹脂の
流路の障害物によってウエルドや流れむらが現れる状態
を示す図である。FIG. 1 is a view showing a state in which welds and uneven flow appear due to obstacles in a flow path of a molten resin when injection molding or extrusion molding is performed using a thermoplastic resin composition containing a plate-like filler.
【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図２に示す透明層の形成説明図である。FIG. 3 is an explanatory view of forming a transparent layer shown in FIG. 2;
【図４】図１のＢ−Ｂ線断面図である。FIG. 4 is a sectional view taken along line BB of FIG. 1;
１ 孔（障害物） ２ ウエルド ３ 透明層 ４ フォンテンフロー 1 hole (obstacle) 2 weld 3 transparent layer 4 Fontenflow
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０８Ｋ 7/00 Ｃ０８Ｋ 7/00 // Ｂ２９Ｋ 105:12 Ｂ２９Ｋ 105:12 105:16 105:16 (72)発明者 山喜 政彦 愛知県名古屋市南区丹後通２−１ 三井化 学株式会社内 (72)発明者 今川 秋彦 愛知県名古屋市南区丹後通２−１ 三井化 学株式会社内 (72)発明者 三河 満晴 愛知県名古屋市南区丹後通２−１ 三井化 学株式会社内 Ｆターム(参考） 4F071 AA02 AB09 AB12 AB20 AB26 AB28 AE09 AE17 AF32 AH12 BB05 BB06 4F206 AB11 AB12 AB25 JA07 JB28 JM05 JN43 JQ81 4J002 AA011 CL062 DA018 DA096 DA097 DC007 DE188 DJ008 DL008 FA016 FA042 FA048 FA068 FA078 FA087 FD017 FD096 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C08K 7/00 C08K 7/00 // B29K 105: 12 B29K 105: 12 105: 16 105: 16 (72) Inventor Masahiko Yamaki 2-1 Tango-dori, Minami-ku, Nagoya-shi, Aichi, Japan Mitsui Chemicals, Inc. (72) Inventor Akihiko Imagawa 2-1 Tango-dori, Minami-ku, Nagoya, Aichi, Japan Mitsui Chemicals, Inc. (72) Inventor Mitsuharu Mikawa 2-1 Tango-dori, Minami-ku, Nagoya-shi, Aichi F-term (reference) 4F071 AA02 AB09 AB12 AB20 AB26 AB28 AE09 AE17 AF32 AH12 BB05 BB06 4F206 AB11 AB12 AB25 JA07 JB28 JM05 JN43 JQ81 4J002 AA0181 CL06 DA096 DA097 DC007 DE188 DJ008 DL008 FA016 FA042 FA048 FA068 FA078 FA087 FD017 FD096
Claims (6)
リック調顔料：０．１〜５重量％、メタリック調フィラ
ー：０．１〜５重量％を含む熱可塑性樹脂組成物。1. A thermoplastic resin composition containing 90 to 95% by weight of a thermoplastic resin, 0.1 to 5% by weight of a metallic pigment, and 0.1 to 5% by weight of a metallic filler.
リック調顔料：０．１〜５重量％、メタリック調フィラ
ー：０．１〜５重量％、繊維状フィラーと針状フィラー
の少なくとも一方：０．１〜５０重量％を含む熱可塑性
樹脂組成物。2. A thermoplastic resin: 50 to 95% by weight, a metallic pigment: 0.1 to 5% by weight, a metallic filler: 0.1 to 5% by weight, and at least one of a fibrous filler and an acicular filler: A thermoplastic resin composition containing 0.1 to 50% by weight.
成物を射出成形してなる成形物。3. A molded product obtained by injection molding the thermoplastic resin composition according to claim 1 or 2.
ートサイクル成形法で成形してなる成形物。4. A molded article formed by the heat cycle molding method in the injection molding according to claim 3.
色成形法で透明樹脂を表層として組合わせてなる成形
物。5. The injection molding according to claim 3, wherein
A molded product obtained by combining a transparent resin as a surface layer by a color molding method.
成物を押出成形してなる成形物。6. A molded product obtained by extruding the thermoplastic resin composition according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001009118A JP2002212440A (en) | 2001-01-17 | 2001-01-17 | Thermoplastic resin composition and its molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001009118A JP2002212440A (en) | 2001-01-17 | 2001-01-17 | Thermoplastic resin composition and its molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002212440A true JP2002212440A (en) | 2002-07-31 |
Family
ID=18876653
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| Application Number | Title | Priority Date | Filing Date |
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| JP2001009118A Pending JP2002212440A (en) | 2001-01-17 | 2001-01-17 | Thermoplastic resin composition and its molding |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1607206A1 (en) * | 2003-01-21 | 2005-12-21 | Techno Polymer Co., Ltd. | Injection molding die, injection molding method, and weldless molded product |
| JP2008546853A (en) * | 2005-05-11 | 2008-12-25 | エルジー・ケム・リミテッド | Polymer resin composition and method for producing the same |
| JP2009035713A (en) * | 2007-07-09 | 2009-02-19 | Japan Polypropylene Corp | Propylene-based polymer composition |
| CN102498166A (en) * | 2009-07-20 | 2012-06-13 | 姜明镐 | Synthetic resin composition for metal-like mouldings and an injection moulding method and mouldings employing the same |
| EP2623290A1 (en) * | 2010-09-30 | 2013-08-07 | Asahi Kasei Chemicals Corporation | Injection-molded object |
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| JP2000153566A (en) * | 1998-11-20 | 2000-06-06 | Hitachi Ltd | Brilliant molded article |
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| JPS6442216A (en) * | 1987-08-07 | 1989-02-14 | Mitsui Petrochemical Ind | Method and apparatus for preparing plastic product |
| JPH05112668A (en) * | 1991-10-23 | 1993-05-07 | Nippon Kararingu Kk | Synthetic resin composition |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1607206A1 (en) * | 2003-01-21 | 2005-12-21 | Techno Polymer Co., Ltd. | Injection molding die, injection molding method, and weldless molded product |
| EP1607206A4 (en) * | 2003-01-21 | 2006-11-29 | Techno Polymer Co Ltd | Injection molding die, injection molding method, and weldless molded product |
| JP2008546853A (en) * | 2005-05-11 | 2008-12-25 | エルジー・ケム・リミテッド | Polymer resin composition and method for producing the same |
| JP2009035713A (en) * | 2007-07-09 | 2009-02-19 | Japan Polypropylene Corp | Propylene-based polymer composition |
| CN102498166A (en) * | 2009-07-20 | 2012-06-13 | 姜明镐 | Synthetic resin composition for metal-like mouldings and an injection moulding method and mouldings employing the same |
| US8691138B2 (en) | 2009-07-20 | 2014-04-08 | Myung Ho Kang | Injection molding method for metal-texture resin molded article |
| EP2623290A1 (en) * | 2010-09-30 | 2013-08-07 | Asahi Kasei Chemicals Corporation | Injection-molded object |
| EP2623290A4 (en) * | 2010-09-30 | 2015-01-28 | Asahi Kasei Chemicals Corp | Injection-molded object |
| US9725587B2 (en) | 2010-09-30 | 2017-08-08 | Asahi Kasei Chemicals Corporation | Injection molded article |
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